Have you solved the problem ?
If not: check the 0.47 Ohm resistors right behind TR709 and TR714 !
These are Metal Oxyde Film Resistors, they are used as a kind of fuses and melt away if there is too much current...
Christof
If not: check the 0.47 Ohm resistors right behind TR709 and TR714 !
These are Metal Oxyde Film Resistors, they are used as a kind of fuses and melt away if there is too much current...
Christof
----- Original Message -----
From: Heath Finnie
To: yamahacs80@yahoogroups.com
Sent: Wednesday, December 31, 2008 6:42 PM
Subject: [yamahacs80] CS-80 loss of +8.5 and -6.5 voltage on PSU
In my continuing adventures with this thing I realized that my latest problem is a loss of
these two voltages from the PSU. I replaced IC722, and both 1000uf caps. I'm trying to follow
the instructions and run the PSU separate from the rest of the synth by connecting the +15
to +15S and -15 to -15S and I'm not getting any proper voltages running it this way.
Heath
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